Symptoms of Dengue and Testing

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Symptoms

The most common symptom of dengue is fever with any of the following:

  • Aches and pains (eye pain, typically behind the eyes, muscle, joint, or bone pain)
  • Nausea, vomiting
  • Rash
  • Any warning sign
Human silhouette with callout graphics with dengue symptoms.
Common symptoms of dengue.
  • Mild symptoms of dengue can be confused with other illnesses that cause fever.
  • Symptoms of dengue typically last 2–7 days.
  • Most people will recover after about a week.

When to seek emergency help

Symptoms of dengue can become severe within a few hours. Severe dengue is a medical emergency.

About 1 in 20 people who get sick with dengue will develop severe dengue. Severe dengue can result in shock, internal bleeding, and death.

Warning signs are symptoms that indicate a person may be at higher risk for developing severe dengue. Immediately go to a local clinic or emergency room if you or a family member has any of the following warning signs:

  • Belly pain or tenderness
  • Vomiting (at least 3 times in 24 hours)
  • Bleeding from the nose or gums
  • Vomiting blood, or blood in the stool
  • Feeling extremely tired or restless
Graphic showing the warning signs of severe dengue.
Warning signs of severe dengue include bleeding, vomiting, and belly pain.

Testing

  • See your healthcare provider if you have symptoms of dengue and live in or have recently traveled to an area with risk of dengue.
  • A blood test is the only way to confirm the diagnosis.
    • Laboratory confirmation is not required to manage illness from dengue, and your healthcare provider might provide care based on your signs and symptoms.
  • Your healthcare provider may order blood tests to look for dengue or other similar viruses like Zika or chikungunya.

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